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so so am <br /> TABLE 4 <br /> QUALITY ASSURANCE SAMPLE REQUIREMENTS <br /> VERNALIS OFFSITE <br /> Vernalis,California <br /> FgEQUENCY Grab Groundwater <br /> Groundwater Wells lin device per day <br /> Soil One per each type of sampling QA/QC SAMPLE One per each type of sampling device per day le shipment(only if EPA <br /> Field Equipment blank None y One per groundwater sample <br /> EPA 8021B/8260B <br /> One per gr60B 8oundwater sample shipment(only if EPA <br /> 8015M analysis for TPHg or EPA 8021B/82n15M analysis for TPHg <br /> analysis for BTEX will be conducted). <br /> Field Trip blanks None analysis for BTEX will be conducted). <br /> lin event if more than five samples are One per sampling event if more than five samples are <br /> One per sampling collected during that event <br /> collected during that event;if less than five samples <br /> Field Duplicates None per event,then one per year per 20 <br /> per 20 One per analytical batch(minimum one p <br /> les if more than five samples <br /> One per analytical batch(mf more than fmum one ive samples project-specific samples)' specific MS/MSD <br /> One per analytical batch(minimum one per 20 per event,an additional site <br /> project-specific samples);if more than five samples project-specific samples); le should be collected and specified in the chain <br /> samp <br /> Field/Laboratory Matrix Spike per event,an additional site specific MS/MSD per event,an additional site specific MS in <br /> p <br /> should be collected and specified in the chain of-custody <br /> sample should be collected and specified in the chain sampleminimum one per 20 <br /> of-custody <br /> of-custody per 20 One per analytical batch <br /> One per analytical batch(minimum one p samples) per 20 <br /> Laboratory Method Blank One per analytical batch(minimum one per 20 samples) per analytical batch(minimum one <br /> samples) er 20 One <br /> One per analytical batch(minimum one p samples) <br /> Laboratory Control Standard One per analytical batch(minimum one per 20 samples) the analytical method <br /> samples) sample as specified by <br /> Laborato Surro ate Compounds 1?vory xaml 1, .� spe('ifed by the nnalviical method Every sample as specified by the analytical method Every <br /> rY g <br /> Abbreviations: <br /> BTEX=Benzene,toluene,ethylbenzene,and 10181 xylol ICs <br /> EPA=U.S.Environmental Protection Agency <br /> MS/MSD=Matrix spike/matrix spike duplicate <br /> QA/QC=Quality assurance/quality control <br /> TPHg=Total petroleum hydrocarbons quantified as gasoline <br /> ga <br /> .:7A4§46.- <br /> ' <br /> From Science to Solutions <br /> Page 1 of 1 <br />